The Micro5 IAQ sampling cassette was pioneered to evenly and quantitatively collect mold & fungal spores, fibers, dander, insect components and other airborne contaminants. Deposition of particles/spores onto the adhesive is uniform in all directions due to spore trap design. The Micro5 is designed to operate at a flow ratee of 5 liters per minute for durations ranging from one to 10 minutes. Compatible with traditional vacuum pumps, as well as most portable units. Connect to a vacuum source with either a ½” or ¼” converter or directly with ¼” tubing.